任意速度场中的共移标架辐射转移-- II。大规模应用
Comoving-frame radiative transfer in arbitrary velocity fields -- II. Large scale applications
摘要：
在以前的论文中介绍的任意速度场的辐射传输问题的解决方案，在其适用性方面有局限性。对于大规模应用，所描述的方法还需要通常不可用于现有技术的计算硬件的大存储器集合。在这项工作中，我们修改的算法，允许计算大规模的问题。我们通过区域分解来减少内存占用。通过引入迭代Gauss-Seidel型求解器，我们提高了整体计算的速度。由于区域分解，新算法需要使用并行计算系统。我们提出的算法允许大规模的解决方案，包括任意波长的耦合辐射传输问题。此外，我们发现了一个准解析的正式解决方案的辐射转移，显着提高了整体的计算速度。更重要的是，这种方法确保了我们的算法可以应用于多维拉格朗日辐射传输计算。在多维大气中，速度场通常是混沌的，因此必须包含任意波长的耦合。
英文摘要：
A solution of the radiative-transfer problem in arbitrary velocity fields introduced in a previous paper, has limitations in its applicability. For large-scale applications, the methods described also require large memory sets that are commonly not available to state-of-the-art computing hardware. In this work, we modify the algorithm to allow the computation of large-scale problems. We reduce the memory footprint via a domain decomposition. By introducing iterative Gauss-Seidel type solvers, we improve the speed of the overall computation. Because of the domain decomposition, the new algorithm requires the use of parallel-computing systems. The algorithm that we present permits large-scale solutions of radiative-transfer problems that include arbitrary wavelength couplings. In addition, we discover a quasi-analytic formal solution of the radiative transfer that significantly improves the overall computation speed. More importantly, this method ensures that our algorithm can be applied to multi-dimensional Lagrangian radiative-transfer calculations. In multi-dimensional atmospheres, velocity fields are in general chaotic ensuring that the inclusion of arbitrary wavelength couplings are mandatory.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
